John thomas sentetfey



(No Model.)

J. T. SENTENEY.

PLOW.

Patented Nov. 22, 1887.

YIIIIIIJ'A UNITED STATES PATENT GEETCE.

JOHN THOMAS SENTENEY, OF BLOOKSBURG, CALIFORNIA.

PLOW.

SPECIFICATION forming part of Letters Patent No. 373,489, dated November22, 1887.

Serial No. 240,713. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN Tnonas SENTE- NEY, a citizen of the UnitedStates, residing at Blocksburg, in the county of Humboldt and State ofCalifornia, haveinvented certain new and useful Improvements in Flows;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon,which form a part of this specification.

This invention relates to plows of that class which have reversibleplowshares, and are designed to plow across the field in each direction,making parallel furrows, and turning the earth in the same direction.The plowshares of such plows are reversed at the end of a furrowprevious to returning, and are held in their changed position bysuitable catches, all of which are more or less objectionable, becauseof a too great number of parts, easily gotten out of repair,inconvenient of operation, or some such similar objection.

The present invention has for its object to obviate all objectionsagainst prior devices, and provide a simple, compact, and efficientmeans for holding the plowshare when reversed, and which is convenientof operation for releasing the plowshare, and engaging it,

and which is not liable to get out of repair.

The improvement consists in the novel and peculiar construction andcombination of parts, which will be more fully hereinafter set forth,claimed,and shown in the annexed drawings, in which Figurel is aperspective view ofa plow embodying my invention; Fig. 2, a detailseetional view about on the line X X of Fig. 1, looking in the directionof the arrow, showing the plowshare reversed by dotted lines; Fig. 3, atop view of the front portion ofthe standard and the lock-bolt carriedthereby, and Fig. 4 a sectional detail view on the line YY of Fig. 1.

The plow beams A, handles B, reversible plowshare C, landside-bars D,and standard E are old and well-known constructions and arrangements,and are shown simply to illustrate the application of my invention.

The upper end of the front portion, E, of the standard is extended tothe front and rear, forming bearings e and e, which bear against theunder side of the beam, and is held thereto by the keeper F, and theyoke f, seated in a groove or recess in one of the bearings and held tothe keeper by the nuts f.

The catch or look for fastening the plowshare in either of its adjustedpositions is composed of the rockshaft G, journaled in bearinge, andhaving hook-shaped heads g,whiol1 are adapted to be turned down andengage with the landside-bars D. The heads are one width, and are largerthan the shaft to overlap the sides of the bearing 6', and prevent anylongitudinal movement of said shaft. To facilitate the mounting of theshaft the bearing 6 is provided with a removable cap portion, 6 betweenwhich and the bearing proper, e, the shaft isjournaled. The arm H,extending rearwardly from the rock-shaft, terminates in an eye, It, towhich the lowerend of the operating-rod Iis loosely connected. This rodeX- tends upward within convenient reach of the driver, and is held toone of the handles by keeper 6. A movement of rod I up or down rotatesrock-shaft G and engages or disengages its head from the landside-bar ofthe plowshare, whichever is desired.

The rock-shaft, the hook-shaped heads, and the arm, for the sake ofeconomy, will be made ofa single casting. However, I do not restrictmyself to such construction, as it is evident that they may be madeseparate and secured together.

Having thus described my invention,what I claim, and desire to secure byLetters Patent, 1s-

1. The combination, with the plow-beam and the reversible plowshare,ofthe rock-shaft having hook-shaped ends journaled transversely of thebeam, and means, substantially as described, for operating saidrock-shaft for locking the plowshare in either position, substantiallyas set forth.

2. The combination, with the plow beam, the standard having the upperend ofils front portion extended front and rear, formingbearings whichare grooved, the yoke seated in the groove of one of the bearings, andthe clip embracing the beam and held to the yoke by ICO and extendingwithin convenient reach, and the reversible plowshare havinglandsidebars, substantially as and 'for the purpose specified. I 5

In testimony whereof I afifix my signature in presence of two witnesses.

JOHN THOMAS SENTENEY.

Witnesses:

GEO. J. TOOBY, VIoToR HOPE.

